package com.example.demo.component;


import com.example.demo.common.CommonResult;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.core.MethodParameter;
import org.springframework.http.MediaType;
import org.springframework.http.server.ServerHttpRequest;
import org.springframework.http.server.ServerHttpResponse;
import org.springframework.web.bind.annotation.RestControllerAdvice;
import org.springframework.web.servlet.mvc.method.annotation.ResponseBodyAdvice;

/**
 * Created with IntelliJ IDEA.
 * Description:
 * User: 马拉圈
 * Date: 2023-09-02
 * Time: 16:15
 */
@RestControllerAdvice
public class ResponseAdvice implements ResponseBodyAdvice {

    @Autowired
    private ObjectMapper objectMapper;

    @Override
    public boolean supports(MethodParameter returnType, Class converterType) {
        return true;
    }

    @Override
    public Object beforeBodyWrite(Object body, MethodParameter returnType, MediaType selectedContentType, Class selectedConverterType, ServerHttpRequest request, ServerHttpResponse response) {
        if(body instanceof CommonResult) {
            return body;
        }
        if(body instanceof String) {
            try {
                return objectMapper.writeValueAsString(CommonResult.success(body));
            } catch (JsonProcessingException e) {
                e.printStackTrace();
            }
        }
        return CommonResult.success(body);
    }
}
